Removed unnecessary styling attributes
Specifically: android:layout_width and android:layout_height
Added attribute parsing to FlatProgressBarView
Fixed FlatBrogressBarView attribute parsing
Also added invalide() to all of the setters
Added FlatProgressBarView styling to the layout
Fixed FlatProgressBarView text drawing
Also changed default progress to 0
Updated layout
to make it similar to the mockup.
Added setText method to FlatProgressBarView
Progress bar in the layout now works